Challenging Misconceptions about the Coefficient of Determination (R²) with a Dynamic GeoGebra Applet
Michael Singer Meagher — Brooklyn College - CUNY
Michael Todd Edwards — Miami University
Asli Özgün-Koca — Wayne State University
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pp. 48–61
Abstract
The authors present an applet, R2 Explorer, that can be used to explore how the value of R2 is related to data points and to challenge the misconception that R2 measures “percentage of fit” of a regression line.
Keywords: linear regression, coefficient of determination, multiple linked representations
Licensed under CC BY-NC-SA 4.0 · ISSN 2162-3856 · North American GeoGebra Journal